Add demo image

Author: irustm

README.md

@@ -8,6 +8,18 @@ Angular NodeGUI is powered by Angular 🅰️ and Qt5 💚 which makes it CPU an
 
 Main docs: https://docs.nodegui.org
 
+# Getting started
+
+## Requirements
+
+- CMake 3.1 and up
+- Make, GCC v7
+- NodeJS 12.x and up.
+
+Setting up on [macOS](https://docs.nodegui.org/docs/guides/getting-started#setting-up-on-macos), [Windows](https://docs.nodegui.org/docs/guides/getting-started#setting-up-on-windows), [Linux](https://docs.nodegui.org/docs/guides/getting-started#setting-up-on-linux)
+
+[Getting started](https://docs.nodegui.org/docs/guides/getting-started)
+
 ## Easy start
 
 ```
@@ -17,4 +29,6 @@ npm start
 
 ## Demo
 
+
+
 Coming soon..